CVE-2026-76388

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-20. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In Splunk Enterprise Security versions below 8.6.1, a user who holds the ess_analyst Splunk Enterprise Security role could change User and Entity Behavior Analytics (UEBA) search macros that scheduled searches run with administrator permissions, allowing for access to all relevant data and system integrity through those searches. The vulnerability is possible because the UEBA app metadata grants analyst roles write access to search macros that should be writable only by administrator roles. For more information see Users and roles for Splunk Enterprise Security (https://help.splunk.com/en/splunk-enterprise-security-8/install/8.4/installation/users-and-roles-for-splunk-enterprise-security) and Roles and knowledge objects in UEBA for Splunk Enterprise Security (https://help.splunk.com/en/splunk-enterprise-security-8/administer/8.5/user-and-entity-behavior-analytics/roles-and-knowledge-objects-in-ueba-for-splunk-enterprise-security) in the Splunk documentation.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 21, 2026

Advisory Details (1)

Auto-updated Aug 19, 2026
No patch confirmed yet.
generic

SVD-2026-0807 | Splunk Vulnerability Disclosure

https://advisory.splunk.com/advisories/SVD-2026-0807

Vendor Advisories for CVE-2026-76388(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 17× in last 7d / 17× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 04:35 UTCEG score recompute
  2. 2026-08-21 04:35 UTCGHSA enrichment
  3. 2026-08-21 04:00 UTCEG score recompute
  4. 2026-08-21 04:00 UTCGHSA enrichment
  5. 2026-08-21 01:14 UTCEG score recompute
  6. 2026-08-21 01:14 UTCGHSA enrichment
  7. 2026-08-20 22:56 UTCEPSS rescore
  8. 2026-08-20 14:25 UTCEG score recompute
  9. 2026-08-20 14:25 UTCGHSA enrichment
  10. 2026-08-20 13:33 UTCEG score recompute
  11. 2026-08-20 13:33 UTCGHSA enrichment
  12. 2026-08-20 13:12 UTCGHSA enrichment
  13. 2026-08-20 09:13 UTCEG score recompute
  14. 2026-08-20 09:12 UTCGHSA enrichment
  15. 2026-08-19 22:20 UTCEG score recompute
  16. 2026-08-19 21:38 UTCEG score recompute
  17. 2026-08-19 21:37 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-76388?
CVE-2026-76388 is a high vulnerability published on August 19, 2026. In Splunk Enterprise Security versions below 8.6.1, a user who holds the ess_analyst Splunk Enterprise Security role could change User and Entity Behavior Analytics (UEBA) search macros that scheduled searches run with administrator permissions, allowing for access to all relevant data and system…
When was CVE-2026-76388 disclosed?
CVE-2026-76388 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76388 actively exploited?
CVE-2026-76388 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.6% of all scored CVEs.
What is the CVSS score of CVE-2026-76388?
CVE-2026-76388 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-76388?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76388, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-76388

Explore →

Is Your Infrastructure Affected by CVE-2026-76388?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs